status_t
arch_relocate_image(image_t* rootImage, image_t* image,
	SymbolLookupCache* cache)
{
	status_t status;

	// deal with the rels first
	if (image->rel) {
		status = relocate_rel(rootImage, image, image->rel, image->rel_len,
			cache);
		if (status < B_OK)
			return status;
	}

	if (image->pltrel) {
		status = relocate_rel(rootImage, image, image->pltrel,
			image->pltrel_len, cache);
		if (status < B_OK)
			return status;
	}

	if (image->rela) {
		//int i;
		TRACE(("RELA relocations not supported\n"));
		return EOPNOTSUPP;

		//for (i = 1; i * (int)sizeof(struct Elf32_Rela) < image->rela_len; i++) {
		//	printf("rela: type %d\n", ELF32_R_TYPE(image->rela[i].r_info));
		//}
	}

	return B_OK;
}
Пример #2
0
static int
relocate_section_rel(Elf32_Sym *sym_table, Elf32_Rel *rel,
		     char *target_sect, int nr_reloc, char *strtab)
{
	Elf32_Sym *sym;
	Elf32_Addr sym_val;
	int i;

	for (i = 0; i < nr_reloc; i++) {
		sym = &sym_table[ELF32_R_SYM(rel->r_info)];
		ELFDBG(("%s\n", strtab + sym->st_name));
		if (sym->st_shndx != STN_UNDEF) {
			sym_val = (Elf32_Addr)sect_addr[sym->st_shndx]
				+ sym->st_value;
			if (relocate_rel(rel, sym_val, target_sect) != 0)
				return -1;
		} else if (ELF32_ST_BIND(sym->st_info) != STB_WEAK) {
			DPRINTF(("Undefined symbol for rel[%x] sym=%lx\n",
				 i, (long)sym));
			return -1;
		} else {
			DPRINTF(("Undefined weak symbol for rel[%x]\n", i));
		}
		rel++;
	}
	return 0;
}
Пример #3
0
static int relocate_rel_array(unsigned char *data, address_t offset,
                              const Elf32_Rel *rel, unsigned rel_count,
                              const Elf32_Shdr *rel_progbits,
                              const Elf32_Sym *sym, unsigned sym_count,
                              const char *strtab) {
    int ret;

    for (; rel_count > 0; rel_count--, rel++) {
        Elf32_Word sym_index = ELF32_R_SYM(rel->r_info);

        if (sym_index >= sym_count) {
            fputs("sym_index out of bounds\n", stderr);
            return -1;
        }

        ret = relocate_rel(data, offset, rel, rel_progbits,
                           sym + sym_index, strtab);
        if (ret < 0)
            return -1;
    }

    return 0;
}